Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1983CAPRICE V6-229 3.8L VIN 9 2-BBLREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULETECHNICAL SERVICE BULLETINSA/T - OVERHEATING DIAGNOSIS
1983 Chevrolet Caprice V6-229 3.8L VIN 9 2-bbl
A/T - Overheating Diagnosis
1983 Chevrolet Caprice V6-229 3.8L VIN 9 2-bblSECTION A/T - Overheating Diagnosis
Number: 84-10
Section: 7A (VIIc)
Date: Oct., 1983
Subject: TRANSMISSION OVERHEATING
Model and Year: ALL THM 700-R4
TO: ALL CHEVROLET DEALERS
Some THM 700-R4 transmissions may exhibit an overheating condition when the vehicle is driven in fourth gear (overdrive), and the torque converter clutch is not operational. Under these conditions, and especially under heavy load conditions, heat is generated in the torque converter that the transmission cooler cannot cool adequately.
When diagnosing any THM 700-R4 transmission for an overheating condition, the following conditions are some possible causes:
1. The speedometer not working properly on ECM controlled units.
2. A disconnected speedometer cable on ECM controlled units.
3. The transmission electrical connector was disconnected.
4. The torque converter clutch inoperative.
5. An inoperable ECM unit.
6. Refer to the appropriate torque converter diagnosis section in your service manual for additional information.
To prevent possible transmission overheating conditions, it is recommended that the THM 700-R4 transmission never be driven in fourth gear when the torque converter clutch is not operational. If the torque converter clutch is not operational or even suspected to be not operational, the vehicle should be driven in manual third range and the vehicle serviced.
Section: 7A (VIIc)
Date: Oct., 1983
Subject: TRANSMISSION OVERHEATING
Model and Year: ALL THM 700-R4
TO: ALL CHEVROLET DEALERS
Some THM 700-R4 transmissions may exhibit an overheating condition when the vehicle is driven in fourth gear (overdrive), and the torque converter clutch is not operational. Under these conditions, and especially under heavy load conditions, heat is generated in the torque converter that the transmission cooler cannot cool adequately.
When diagnosing any THM 700-R4 transmission for an overheating condition, the following conditions are some possible causes:
1. The speedometer not working properly on ECM controlled units.
2. A disconnected speedometer cable on ECM controlled units.
3. The transmission electrical connector was disconnected.
4. The torque converter clutch inoperative.
5. An inoperable ECM unit.
6. Refer to the appropriate torque converter diagnosis section in your service manual for additional information.
To prevent possible transmission overheating conditions, it is recommended that the THM 700-R4 transmission never be driven in fourth gear when the torque converter clutch is not operational. If the torque converter clutch is not operational or even suspected to be not operational, the vehicle should be driven in manual third range and the vehicle serviced.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.